How to Bulk Update records in Entity Framework?

Question

I am trying to bulk update records using Entity Framework. I have tried Entity Framework.Extensions Update method.

The Update method is abl

Answer 1

If you don't want to use an SQL statement, you can use the Attach method in order to update an entity without having to load it first :

using (myDbEntities db = new myDbEntities())
{
    try
    {
      //disable detection of changes to improve performance
      db.Configuration.AutoDetectChangesEnabled = false;

      //for all the entities to update...
      MyObjectEntity entityToUpdate = new MyObjectEntity() {Id=123, Quantity=100};
      db.MyObjectEntity.Attach(entityToUpdate);

      //then perform the update
      db.SaveChanges();
    }
    finally
    {
      //re-enable detection of changes
      db.Configuration.AutoDetectChangesEnabled = true;
    }
}